Carl borgin



(No Model.)

0. BURGIN. RECEIVING NEEDLE FOR STIGKING 0N OF PAPER SHEETS.

No. 539,215. PatentedMay 14,1895.

wv'inesses: l [lawn Z01 Jiiarnegs.

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NITED STATES PATENT FFICE.

CARL BURGIN, OF SOHAFFHAUSEN, SWITZERLAND.

SPECIFICATION forming part of Letters Patent No. 539,215, dated May 14,1895. Application filed May 3, 1894- Serial No. 509,948- (No model.)

To 0056 whom it may concern;

Be it known that I, CARL BI'FRGIN, a citizen of the Republic ofSwitzerland, residing at Schaffhausen, Switzerland, have invented acertain new and useful Improvement in Receiving-Needles for the Stickingon of Paper Sheets, of which the following is a specification.

For the purpose of stacking and arranging sheets of paper, upon whichlithographs or other printed matter is to be produced, in such a mannerthat the stack of sheets can be so cut that the impression will beprecisely the same distance from the edge of the sheet in each case, thesaid sheets are mounted on pins which are passed through marks on thesheets, so that all the sheets will register absolutely correct. Thepinsfor thus' mounting the sheets are provided attheir buttor base endswith a plate or disk by means of which the pins can be placed verticallyon a suitablesupport.

Heretofore it has been customary to perforate the pins and provide themwith central indentations on the under side, through which the pins areto pass, the butt end of the pin being then secured by means of sol- Inuse, these pins are placed on a suitable support and their entire undersurface rested on the support.

The object of my invention is to provide a new and improved pin for theabove-described purpose, which is simple in construction, is held intrue vertical position when placed on the support and is lasting anddurable.-

The invention consists in a pin provided on its butt or lower end with ahead placed in a recess in the upper surface of a disk, the walls ofsaid recess or socket being clamped over the head of the pin, and saidpin shaped so as to have a concavity on the under side, and a teat atthe center on the under side, whereby when the pin is placed on asupport the edges of the disk rest on the support and hold the pinvertically.

In the accompanying drawings, Figure 1 is a side view of my improvedregistry-pin. Fig. 2 is a side view of the parts in the process ofassembling, the disk being shown in section. Fig. 3 is a similar viewshowing in section the disk and the punch and die for uniting the partsand shaping the disk. Fig.

4. is a plan view of the disk.

Similar letters of reference indicate correspending parts.

The pin 0 is provided at its butt end with a head I). The disk Ct isprovided in the center of its upper surface with a socket or recess 9formed by an annular ridge projecting from the upper surface of the diskat the center thereof. The head I) of the pin 0 is.

placed into said socket or recess and the disk 0. is placed on the die Ashaped to receive the same. A punch B having a central aperture for thepin 0 is then forced down upon thedisk a on the die A and presses theannular wall or ridge forming the socket or recess e over the pin-head,whereby said pinhead is clamped firmly and securely to the disk. At thesame time, the under side of the disk is dished or concaved and providedwith a central teat at below the head of the pin,,the die A being shapedaccordingly. The teat (1 projects down to, or almost down to the planeof the edge of the disk at so that when the pin is placed on a suitablesupport for use, the disk restson its edges or on the edges andthe'central teat. The pin is held securely in the base-plate or disk,and is not apt to become loosened and under no circumstances, even whenloosened, can it drop through the base-plate or disk, as in the pin usedheretofore, as the base-plate or disk of my improved pin is notperforated.

The pin can be produced at less cost than the soldered pins, and in amore perfectv manner.

Having thus described my invention, I claim as new and desire to secureby Letters Patentthe end of the teat so as to afford a support for thedevice, substantially as set forth.

In testimony whereof I hereunto sign my name, in the presence of twosubscribing witnesses, this 3d day of April, 1894.

CARL BiiReIN.

Witnesses:

Monrrz VEITH, H. RABHART.

